The orange colour shows up well against most backgrounds.

橙色在多数背景下都很能突显出来。

《柯林斯英汉双解大词典》

Choose a light yellow or orange colour.

选择一种明亮的黄色或橙色。

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If you mix red and yellow, you get orange colour.

当你调和红及黄色，你就得到橙色。

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It seems a layer of varnish added later to protect the work is in fact turning the yellow to a greyish-orange colour.

BBC: Van Gogh's Flowers In A Blue Vase damage seen in X-rays

But the bugs can also be orange in colour and checked in pattern.

BBC: NEWS | UK | Northern Ireland | Hunt on for 'deadly ladybird'

The Alliance for Austria's Future, as the new party is called, has adopted the colour orange from Ukraine's revolution.

ECONOMIST: The far-right maverick forms a new party of his own